Broadcast Engineer at BellMedia, Computer history buff, compulsive deprecated, disparate hardware hoarder, R/C, robots, arduino, RF, and everything in between.
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The quest for a reactionless spacecraft thruster

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For many decodes, a fantasy among space enthusiasts has been to invent a device that produces a net thrust in one direction, without any need for reaction mass. Of course, a reactionless space drive of this type is impossible. Or is it? By Charles Platt Read the rest
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Massive Attack's "Teadrop" on acoustic guitar

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Gregory Johnson of Acoustic Labs plays a beautiful acoustic cover of Massive Attack's downtempo classic "Teardrop." Original version below.

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tekvax
7 hours ago
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love this...
Burlington, Ontario
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Pi, Spigot Algorithms And The Simpsons #SaturdayMorningCartoons

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Pi, Spigot Algorithms and why The Simpsons is not in Base 8? via Numberphile on youtube.com

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altEach Saturday Morning here at Adafruit is Saturday Morning Cartoons! Be sure to check our cartoon and animated posts both nostalgic and new that inspire makers of all ages! You’ll find how-tos for young makers, approaches to learning about science and engineering, and all sorts of comic strip and animated Saturday Morning fun! Be sure to check out our Adafruit products featuring comic book art while you’re at it!

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A Raspberry Pi Powered Drink Mixer @Raspberry_Pi #piday #raspberrypi

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Barbot 300x221

Check out this tutorial from shazbert.com and learn how to build your own drink mixer powered by a raspberry pi!

So, have you ever been to a party with a terrible bartender? No bartender? Who wants to pour their own drink like a peasant? BarBot can and will change all that! BarBot is a simple, effective way to entertain and intoxicate your guests. Four liquids can be installed and mixed for creative compositions. I designed BarBot so party guests can simply walk up, place their cup on the platform and select a drink from the simple interface (accessible from a smart phone or tablet). A fun loading screen lets you know that your drink is being compiled! The menu then comes back for another selection to be made. Drink up!

How it works:
The Raspberry Pi is listening on 2 ports; apache2 webserver on 80 and Golang on 8080. The menu page is loaded onto your tablet or smart phone. Once a button is selected from the web interface, the options are hidden so multiple selections cannot be made. Then an AJAX request to the BarBot program is made. BarBot receives the request, and then compiles the selected drink by triggering the relays to corresponding pumps, (A pump normally pours at the rate of 1ml per second). After the drink is poured, the BarBot program responds to the AJAX request by loading the page. The menu buttons then return.

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Featured Adafruit Products!

1150 07

Peristaltic Liquid Pump with Silicone Tubing – Move fluid safely from here to there with this very nice little pump. Unlike most liquid pumps, this is a peristaltic type – the pump squishes the silicone tubing that contains the liquid instead of impelling it directly. The upshot? The pump never touches the fluid which makes this an excellent choice for any food/drink/sterile based pumping such as for making drink-bots or gardening robots!

The pump is basically a geared down DC motor, so it has a lot of torque. Inside the pump is a ‘clover’ pattern of rollers. As the motor turns, the clover presses on the tube to press the fluid though. The pump does not need to be primed and in fact can self-prime itself with water a half meter with ease. You can PWM the motor to speed up or slow down the flow rate and if you connect the motor the other way it will move fluid the other direction. Works great with either a power transistor (basic on/off) or a motor driver chip such as the L293D.(read more)


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Snowpocalypse 2014 in photos: Wow, much snow. Many cold.

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Tom Wilczak shovels snow from the roof of his home following a storm in Buffalo, New York November 20, 2014.   REUTERS/Aaron Lynett


Tom Wilczak shovels snow from the roof of his home following a storm in Buffalo, New York November 20, 2014. REUTERS/Aaron Lynett

Western New York is buried in much of the snows. Here are photos.

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Scratch-built, incredibly detailed Millennium Falcon

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Thomas Richner spent more than 140 hours scratch-building a spectacularly detailed cardboard model of Star Wars's Millennium Falcon, working with scrap cardboard boxes and then shooting his model on a green-screen and compositing onto backgrounds from the movies. (more…)

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